0 1 0x3B Start of frame (0x3A, 0x3B)
1 1 0x16 Address (static)
2 1 0x2A Frame type
3 1 0x18 Data length
. . ...
. . ... 24 bytes data
. . ...
28 1 0x6F CRC
29 1 0x03 CRC
30 1 0x0D End of frame
31 1 0x0A End of frame
BASEN_FRAME_TYPE_CELL_VOLTAGES_1_12 = 0x24;
BASEN_FRAME_TYPE_CELL_VOLTAGES_13_24 = 0x25;
BASEN_FRAME_TYPE_CELL_VOLTAGES_25_34 = 0x26;
BASEN_FRAME_TYPE_PROTECT_IC = 0x27;
BASEN_FRAME_TYPE_STATUS = 0x2A;
BASEN_FRAME_TYPE_GENERAL_INFO = 0x2B;
BASEN_FRAME_TYPE_SETTINGS = 0xE8;
BASEN_FRAME_TYPE_SETTINGS_ALTERNATIVE = 0xEA;
BASEN_FRAME_TYPE_BALANCING = 0xFE;
Request: 0x3B 0x16 0x2A 0x01 0x00 0x41 0x00 0x0D 0x0A
Response: 0x3B 0x16 0x2A 0x18 0x00 0x00 0x00 0x00 0xCE 0x61 0x00 0x00 0x12 0x14 0x19 0x19 0x63 0x23 0x00 0x00 0x80 0x80 0x00 0x00 0x08 0x02 0x00 0x00 0x6F 0x03 0x0D 0x0A
Byte Len Payload Description Unit Precision
0 1 0x3B Start of frame
1 1 0x16 Address
2 1 0x2A Frame type
3 1 0x18 Data length
4 4 0x00 0x00 0x00 0x00 Current (without calibration) A 0.001f (signed)
8 4 0xCE 0x61 0x00 0x00 Total voltage V 0.001f
12 1 0x12 Temperature 1 °C 1.0f
13 1 0x14 Temperature 2 °C 1.0f
14 1 0x19 Temperature 3 °C 1.0f
15 1 0x19 Temperature 4 °C 1.0f
16 4 0x63 0x23 0x00 0x00 Capacity remaining Ah 0.001f
20 1 0x80 Charging states (Bitmask)
21 1 0x80 Discharging states (Bitmask)
22 1 0x00 Charging warnings (Bitmask)
23 1 0x00 Discharging warnings (Bitmask)
24 1 0x08 State of charge % 1.0f
25 1 0x19 Unused
26 1 0x00 Unused
27 1 0x00 Unused
28 1 0x6F CRC
29 1 0x03 CRC
30 1 0x0D End of frame
31 1 0x0A End of frame
Request: 0x3A 0x16 0x2B 0x01 0x00 0x42 0x00 0x0D 0x0A
Response: 0x3A 0x16 0x2B 0x18 0xA0 0x86 0x01 0x00 0x00 0x64 0x00 0x00 0x91 0xA0 0x01 0x00 0x00 0x00 0x00 0x00 0x30 0x75 0x00 0x00 0x71 0x53 0x07 0x00 0x86 0x04 0x0D 0x0A
Byte Len Payload Description Unit Precision
0 1 0x3B Start of frame
1 1 0x16 Address
2 1 0x2B Frame type
3 1 0x18 Data length
4 4 0xA0 0x86 0x01 0x00 Nominal capacity Ah 0.001f
8 4 0x00 0x64 0x00 0x00 Nominal voltage V 0.001f
12 4 0x91 0xA0 0x01 0x00 Real capacity Ah 0.001f
16 1 0x00 Unused
17 1 0x00 Unused
18 1 0x00 Unused
19 1 0x00 Unused
20 1 0x30 Unused
21 1 0x75 Unused
22 2 0x00 0x00 Serial number
24 2 0x71 0x53 Manufacturing date
26 2 0x07 0x00 Charging cycles
28 1 0x86 CRC
29 1 0x04 CRC
30 1 0x0D End of frame
31 1 0x0A End of frame
Request: 0x3a 0x16 0x24 0x01 0x00 0x3b 0x00 0x0d 0x0a
Response: 0x3a 0x16 0x24 0x18 0x96 0x0c 0x97 0x0c 0x98 0x0c 0x96 0x0c 0x96 0x0c 0x98 0x0c 0x98 0x0c 0x97 0x0c 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x6a 0x05 0x0d 0x0a
Byte Len Payload Description Unit Precision
0 1 0x3B Start of frame
1 1 0x16 Address
2 1 0x24 Frame type
3 1 0x18 Data length
4 2 0x96 0x0C Cell voltage 1
6 2 0x97 0x0C Cell voltage 2
8 2 0x98 0x0C Cell voltage 3
10 2 0x96 0x0C Cell voltage 4
12 2 0x96 0x0C Cell voltage 5
14 2 0x98 0x0C Cell voltage 6
16 2 0x98 0x0C Cell voltage 7
18 2 0x97 0x0C Cell voltage 8
20 2 0x00 0x00 Cell voltage 9
22 1 0x00 0x00 Cell voltage 10
24 1 0x00 0x00 Cell voltage 11
26 1 0x00 0x00 Cell voltage 12
28 1 0x6A CRC
29 1 0x05 CRC
30 1 0x0D End of frame
31 1 0x0A End of frame
Request: 0x3A 0x16 0xFE 0x01 0x00 0x15 0x01 0x0D 0x0A
Response: 0x3A 0x16 0xFE 0x13 0x01 0x75 0x08 0x34 0x80 0x80 0x00 0x00 0x80 0x00 0x00 0x00 0x00 0x00 0x00 0x02 0x76 0x53 0x61 0x85 0x04 0x0D 0x0A
Byte Len Payload Description Unit Precision
0 1 0x3B Start of frame
1 1 0x16 Address
2 1 0xFE Frame type
3 1 0x13 Data length
4 1 0x01
5 1 0x75
6 1 0x08
7 1 0x34
8 1 0x80
9 1 0x80
10 1 0x00
11 1 0x00
12 1 0x80
13 1 0x00
14 1 0x00
15 1 0x00
16 1 0x00
17 1 0x00
18 1 0x00
19 1 0x02
20 1 0x76
21 1 0x53
22 1 0x61
23 1 0x85 CRC
24 1 0x04 CRC
25 1 0x0D End of frame
26 1 0x0A End of frame
Request: 0x3A 0x16 0x26 ...
Response: ?
Byte Len Payload Description Unit Precision
0 1 0x3B Start of frame
1 1 0x16 Address
2 1 0x27 Frame type
3 1 Data length
4 1
5 1
6 1
7 1
8 1
9 1
10 1
11 1
12 1
13 1 Temperature 3 (if SOF is 0x3B)
14 1
15 1
16 1
17 1 Temperature 4 (if SOF is 0x3B)
18 1
19 1
20 1
21 1
22 1
23 1 0x85 CRC
24 1 0x04 CRC
25 1 0x0D End of frame
26 1 0x0A End of frame
Sum of bytes (1...data_len+3) excluding the start of frame.
uint16_t chksum_(const uint8_t data[], const uint16_t len) {
uint16_t checksum = 0x00;
for (uint16_t i = 0; i < len; i++) {
checksum = checksum + data[i];
}
return checksum;
}